vbox的更動 30889 路徑 trunk/include/VBox/hwacc_vmx.h

時間撮記:

2010-7-17 上午01:54:47 (14 年 以前)

作者:

vboxsync

訊息:

PGM: Cleanups related to pending MMIO/#PF optimizations. Risky.

檔案:

• trunk/include/VBox/hwacc_vmx.h (修改) (2 筆差異)

trunk/include/VBox/hwacc_vmx.h

@@ -294 +294 @@
 typedef struct EPTPTEBITS
 {
-    /** Present bit. */
+    /** Present bit.
+     * @remark This is a convenience "misnomer".  The bit actually indicates
+     *         read access and the CPU will consider an entry with any of the
+     *         first three bits set as present.  Since all our valid entries
+     *         will have this bit set, it can be used as a present indicator
+     *         and allow some code sharing. */
     uint64_t    u1Present       : 1;
     /** Writable bit. */
@@ -308 +313 @@
     /** Physical address of page. Restricted by maximum physical address width of the cpu. */
     uint64_t    u40PhysAddr     : 40;
-    /** Availabe for software. */
+    /** Available for software. */
     uint64_t    u12Available    : 12;
 } EPTPTEBITS;